CVE-2026-63123Tina: Cross-origin `POST /media/upload/*` requests can write arbitrary files into the Tina dev server media root
Updated under an hour ago ()
Does this affect you?
It affects tinacms. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
Tina is a headless content management system. Prior to 2.5.2, the TinaCMS CLI package's Vite dev server packages/@tinacms/cli/src/next/vite/cors.ts origin callback returns false for a disallowed origin but does not reject the request, and packages/@tinacms/cli/src/next/vite/plugins.ts still routes POST /media/upload/* to mediaRouter.handlePost. The upload code in packages/@tinacms/cli/src/next/commands/dev-command/server/media.ts writes attacker-controlled multipart contents inside the configured media root. A remote attacker can cause a developer's browser to submit this state-changing request by inducing the developer to visit an attacker-controlled page while tinacms dev is running. This issue is fixed in version 2.5.2.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-352
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
tinacms tinacms tinacms:tinacms (from the name) | before 2.5.2 | CNA record |
References
- https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6xx-refsource-confirm
- https://github.com/tinacms/tinacms/pull/7111x-refsource-misc
- https://github.com/tinacms/tinacms/commit/211997cdb53cbd43638bdee999faa65375cfc260x-refsource-misc
- https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@2.5.2x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.